45497-73-2Relevant articles and documents
A fluorescence quenching sensor for Fe3+ detection using (C6H5NH3)2Pb3I8·2H2O hybrid perovskite
Zhu, Meng-Ya,Zhang, Le-Xi,Yin, Jing,Chen, Jing-Jing,Bie, Li-Jian
, (2019)
A new organic-inorganic hybrid perovskite (C6H5NH3)2Pb3I8·2H2O single crystal has been synthesized through a facile solution method. In this perovskite, there exists a 1D infinite lead iodide chains constituted by Pb3I8 groups, which is surrounded by anilines. As an active fluorescence quenching sensor material, this perovskite shows excellent performance for Fe3+ detection in N, N-dimethylformamide (DMF) solution with a detection limit of 1.0 × 10?7 mol/L, including short response time, high sensitivity and high selectivity. The sensitivity and selectivity towards Fe3+ is much higher than that towards other metal cations, which provides a facile way for detecting Fe3+ cations in solution. Electron paramagnetic resonance (EPR) confirms that the mechanism of fluorescence quenching can be attributed to Fe3+ inhibition to the radiative electron-hole recombination via capturing electrons.
EFFECT OF THE NATURE OF THE LEAVING GROUP IN REACTIONS OF 2-X-N-ETHYLPYRIDINIUM SALTS WITH AMINES IN ACETONITRILE
Titskii, G. D.,Mitchenko, E. S.
, p. 1949 - 1954 (2007/10/02)
The rate-determining stage in the nucleophilic substitution reactions of 2-X-N-ethylpyridinium salts with piperidine in acetonitrile changes, depending on the nature of the leaving group X.In the case where X = Hlg the controlling stage is the formation of the C-N bond.When X = 4-NO2C6H4O3, 3,4-(NO2)2C6H3O, and 2,6-(NO2)2C6H3O, nucleophilic substitution at the carbon atom is controlled by cleavage of the C-X bond.Nucleophilic substitution at a carbon atom of the benzene ring predominates in the reaction of 2-(2,4-dinitrophenoxy)-N-ethylpyridinium salt with piperidine.
ORGANOARSENIC COMPOUNDS WITH AN As=N BOND. REACTIONS OF As,N-DIARYLARSINIMINES WITH HYDROGEN IODIDE
Kokorev, G. I.,Yambushev, F. D.,Badrutdinov, Sh. Kh.
, p. 412 (2007/10/02)
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